Oshiro 500mm f/6.3 LD UNC AL Super Telephoto Lens for Pentax K-1, K-S2, K-S1, K-500, K-50, K-30, K5 IIs, K-7, K-5, K-3 II, K-2, K-X, K20D, K100D, K110D and K10D Digital SLR
Pentax HD-DA 16-50mm f/2.8ED PLM AW Lens 28030 B&H Photo Video
Jintu 420mm-800mm Telephoto Lens Camera Lenese + T2 Adapter For Pentax K Mount K3 K5 K7 K20d K-s1 K-50 K5 Ii K-7 K-3 K2 Camera - Camera Lenses - AliExpress
Amazon.com : Pentax K-50 16MP Digital SLR Camera Kit with DA L 18-55mm WR f3.5-5.6 Lens (Black) : Electronics